I would say D.) is the best choice in this situation, The amount of female children you have does not determine the Gender that your child will be, The kids have nothing to do with the situation, The Father and Mother are what determine the Gender.

4 0

3 years ago

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A certain insecticide kills 80% 80% of all insects in laboratory experiments. A sample of 14 insects is exposed to the insectici

Anna [14]

Answer: The probability that exactly 2 insects will survive = 0.2501

Step-by-step explanation:

Given: A certain insecticide kills 80% of all insects in laboratory experiments.

The probability that a particular insect survives= 1-0.80=0.20

Sample size: n=14

Binomial probability distribution:

$P(X=x)=\ ^nC_xp^x(1-p)^{n-x}$ , where x= number of successes , p=probability of success in each trial, n= sample size.

The probability that exactly 2 insects will survive = $^{14}C_2(0.20)^2(0.80)^{12}$

$\\\\=\dfrac{14!}{2!12!}(0.04)(0.068719476736)\\\\=0.2501$

Hence, the probability that exactly 2 insects will survive = 0.2501

6 0

3 years ago

A certain stock starts the day at $27 3/8 per share. If it droos $2 1/2 during the day ,what is the closing value

irga5000 [103]

The answer I got is $24 7/8. Hope this helps

3 0

3 years ago